@article{MZ_1989__202_1_174092,
     author = {Xiao-Wie Peng},
     title = {Collapsing {Riemannian} {Manifolds} to the {Circle.}},
     journal = {Mathematische Zeitschrift},
     pages = {289--298},
     publisher = {mathdoc},
     volume = {202},
     number = {1},
     year = {1989},
     zbl = {0661.53029},
     url = {http://geodesic.mathdoc.fr/item/MZ_1989__202_1_174092/}
}